Answer:
Explanation:
I think one of the most invasive species is perhaps the Dandelion. Who hasn't had a fit when we see them change from yellow to gray. The yellow is pretty, but the gray means it is ready to spread its seed to create more trouble.
Dandelions can be killed with herbicides, but I think you'd be as well off putting up with the dandelion. The herbicides have an unproven effect on our health.
The dandelion was introduced into the Americas in the mid 1600s and was used as food and had medical properties. Since then, because it has no common enemy in nature, it has spread the entire width of the continent. Rather amazing, I think.
Answer:
<h2>homoplasy</h2>
Explanation:
Homoplasy: the character that is present in the set of species but not present in their common ancestors is known as homoplasy. In case of an archaean cell, their rRNA sequence is more similar to that of humans than the sequence of mouse rRNA is to that of humans.
Example: the evolution of the eye which has originated independently in many unrelated species.
Answer:
Fat molecules contain more energy-containing bonds than simple sugars.
Explanation:
Lipids are a large group of mostly non-polar hydrophobic hydrocarbons. They include fats and oils, waxes, phospholipids and steroids. They serve many functions in living organisms such as energy storage molecules, information molecules, insulation against cold in some animals etc.
From the information provided above, lipids have 9 kilocalories per gram, 100,000 kilocalories of energy storage, and 30 to 40 days of life support time. When energy provided per gram by lipids is compared with that of either glucose or glycogen, lipids provide more than twice the energy of that of glucose or glycogen. Similarly, the energy storage capacity of lipids over 1000 times that of glucose and 50 times that of glycogen. Therefore, fat molecules (an example of lipids) contain more energy-containing bonds than simple sugars (e.g. glucose)
Answer:
Top 10 Inventions That Changed the World
The compass. ...
The printing press. ...
The internal combustion engine. ...
The telephone. ...
The light bulb. ...
Penicillin. (Image credit: National Institutes of Health) ...
Contraceptives. (Image credit: Public domain) ...
The Internet. (Image credit: Creative Commons | The Opte Project)
